Spade



E. WPMUNDT.

SPADE. APPLICATION FILED MAY 24, 1920.

Patented July 25, 1922.

ATTORNEY STATES earner creme.

EMIL W. MUNDT, OF BERNARDSVILLE, NEW JERSEY.

Application filed May 24,

To all whom it may concern:

Be it known that I, EMIL W. MUNDT, citizen of the United States,residing at Bernardsville, in the county of Somerset and State of NewJersey, have invented certain new and useful Improvements in Spades, ofwhich the following is a specification.

This invention has relation to digging tools and has for an object toprovide an improved spade wherein the blade is formed of a single .pieceand having as its main characteristic a back reinforced edge which isformed by beveling or bending the material of the blade upon itself,thus decreasing the cost of manufacture of such tool.

In addition to the foregoing this invention com prehends improvements inthe details of construction and arrangement on parts to be hereinafterdescribed and particularly set forth in the appended claim.

-In the accompanying drawings in which similar and corresponding partsare desig nated by the same characters of reference throughout theseveral views in which they appear.

Figure 1 is a View in perspective of a digging tool constructed inaccordance with my invention.

Figure 2 is a fragmentary view in edge elevation, and

Figure 3 is a fragmentary view in rear elevation of the blade.

With reference to the drawings, 10 indicates the blade of a diggingtool, as illustrated in the drawings preferably in the form of a spade.The material of the back edge is cut away at 11 at a point intermediatethe side edges of the blade and the portion of the back edge thus leftis bent backward at the point 12, and again forward at the point 13, thepoint of flexure at both ends being arranged in such a manner that thedistance between the point of fleXure 12 and. the point of flexure 13 isequaled to the distance between the point of flexure 12 and the extremeterminal edge of the blade. It is also preferred that the bent edge ofthe blade be curved transversely as shown in Figure 2. Ameans forconnecting the handle to the blade is provided in the nature of a plate14 which is secured to the rear side of the blade by means of the rivets15, braz- Specification of Letters Patent.

SPADE.

Patented July 25, 1922.

1920. Serial No. 383,788.

ing, or any other manner and said plate is then formed with asemicircular sleeve 16 by bending the material around a mandrel or otherobject, permitting said sleeve 16 to project through the cut-awayportion 11 of the back edge of the blade. This structure is duplicatedat the front of the blade and the edges of the semicircular sleeve 16are crimped together forming a tubular sleeve. A wooden handle or thelike 17 is then inserted in the sleeve 16 and held in any suitablemanner. have provided a blade which may be formed primarily in onepiece, and by means of a die thus eliminating the necessity of formingthe blades in layers or sections in the.

manner heretofore adopted. A considerable saving of labor is effected bythe use of the method of forming the blade described above, in additionto the durability ensured by the sleeve arrangement described.strengthening, as it does the point of connection between the blade andhandle.

While I have illustrated and described my invention with some degree ofparticularity, I realize that in practice various alterations thereinmay be made. I therefore reserve th right and privilege of changing theform or the details of construction or other wise altering thearrangement of the correlated parts without departing from the spirit ofthe invention or the scope of the appended claim.

Having thus described my invention, what I claim as new and desire tosecure by United States Letters Patent is A spade, comprising the bladehaving its upper edge cut away at a point intermedi ate the side edgesof the blade to form a recess, the remaining portions of the upper edgeof the blade being curved and bent at right angles, and said bentportion again bent upon itself to define a curved, heel engagingreinforced upper edge for the blade, a pair of concave plates applied,one to each side of the blade with their concave sides directed towardeach other and in registration with the recess, and a handle enteringsaid recess and the space between said concave plates.

In testimony whereof I affix my signature.

EMIL W. MUNDT.

Thus, it will be seen that I

